G - Physics – 01 – S
Patent
G - Physics
01
S
G01S 3/06 (2006.01) G01S 7/02 (2006.01) G01S 7/292 (2006.01) H04B 1/18 (2006.01) G01S 3/46 (2006.01) G01S 13/02 (2006.01)
Patent
CA 2279161
A pulse Low Probability of Intercept (LPI) signal discriminator has a soft- limiting IF amplifier chain for receiving an IF signal to soft-limit any high-peak IF signals in the IF signal and a high-peak amplitude compressive circuit followed by an integrator which integrates the signal over a predetermined time to produce a high output when a LPI signal is present. The integrator is connected to a threshold detector which outputs a trigger signal when a high output from the integrator is received. In a receiver having a plurality of channels for received signals from a number of antenna, one channel for each antenna, the received signals are down converted to IF signals and applied to analog-to-digital converters (ADCs) which are connected to a digital processor. A pulse/LPI signal discriminator is connected to a channel to receive an IF signal from an associated down converter and produce a trigger pulse when a LPI signal is present which will gate signals from buffer memories connected to ADCs to the digital processor if an LPI signal is detected.
As Represented By The Ministe R. Of National Defence Her Majesty The Queen In Right Of Canada
Gowling Lafleur Henderson Llp
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